引用本文:
Nong Yue HE, Chun YANG, Jian Xin TANG, Peng Feng XIAO, Hong CHEN. An Empiric Linear Formula between the Internal Tetrahedron Symmetric Stretch Frequency and the Al Content in the Framework of KL Molecular Sieves[J]. Chinese Chemical Letters,
2003, 14(8): 870-873.
Citation: Nong Yue HE, Chun YANG, Jian Xin TANG, Peng Feng XIAO, Hong CHEN. An Empiric Linear Formula between the Internal Tetrahedron Symmetric Stretch Frequency and the Al Content in the Framework of KL Molecular Sieves[J]. Chinese Chemical Letters, 2003, 14(8): 870-873.
Citation: Nong Yue HE, Chun YANG, Jian Xin TANG, Peng Feng XIAO, Hong CHEN. An Empiric Linear Formula between the Internal Tetrahedron Symmetric Stretch Frequency and the Al Content in the Framework of KL Molecular Sieves[J]. Chinese Chemical Letters, 2003, 14(8): 870-873.
An Empiric Linear Formula between the Internal Tetrahedron Symmetric Stretch Frequency and the Al Content in the Framework of KL Molecular Sieves
摘要:
KL molecular sieves with different framework compositions were secondarily synthesized by substituting Si for Al with a solution of (NH4)2SiF6. The internal tetrahedron symmetric stretch frequency, at ~770 cm-1, is linear with the molar fraction of Al (XAl=Al/(Si+Al)) in the framework of KL samples:XAl=-7.309×10-3 (υ770-760)+0.3242.
English
An Empiric Linear Formula between the Internal Tetrahedron Symmetric Stretch Frequency and the Al Content in the Framework of KL Molecular Sieves
Abstract:
KL molecular sieves with different framework compositions were secondarily synthesized by substituting Si for Al with a solution of (NH4)2SiF6. The internal tetrahedron symmetric stretch frequency, at ~770 cm-1, is linear with the molar fraction of Al (XAl=Al/(Si+Al)) in the framework of KL samples:XAl=-7.309×10-3 (υ770-760)+0.3242.
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Key words:
- KL molecular sieve
- / infrared spectroscopy
- / linearity
- / framework composition
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